Hydration is key when you're out on the trail, but the mistake many hikers make is lugging their water in a bottle that weighs them down as they go. Using a flexible hose that draws from a heat-sealed BPA-free water bladder, the Hydro-Pro Hydration Backpack lets you tote your H₂O with minimal bulk. Simply throw it on, feed your hose over the left or right strap, and hydrate as you blaze your own trail.